Question: ODE plot not working

with(DEtools,DEplot);with(plots,display);

init3:=seq([0,k*0.2,0],k=-4..10);

p3:=DEplot([sys],[x,y],t=0..2,[init3],x=-3..2,y=-3..2,stepsize=.05,arrows=none,linecolor=black,thickness=1,axes=box,scaling=constrained):

Error, (in f) numeric exception: division by zero

np3:=DEplot([sys],[x,y],t=-2..0,[init3],x=-3..2,y=-3..2,stepsize=.05,arrows=none,linecolor=black,thickness=1,axes=box,scaling=constrained):

Warning, plot may be incomplete, the following errors(s) were issued:
   cannot evaluate the solution further left of -.29861232, probably a singularity
Warning, plot may be incomplete, the following errors(s) were issued:
   cannot evaluate the solution further left of -.93147185e-1, probably a singularity
Warning, plot may be incomplete, the following errors(s) were issued:
   cannot evaluate the solution further left of -.23648931e-1, probably a singularity
Warning, plot may be incomplete, the following errors(s) were issued:
   cannot evaluate the solution further left of -.27325542e-2, probably a singularity

Error, (in f) numeric exception: division by zero

display({p1,p2,p3,np3});

Error, (in plots:-display) expecting plot structures but received: {np3}